Why are community servers and server browsers shunned in modern games?

Seems to me that developers want everyone to use automatchmaking. Games like Counter-Strike used to have a lively private server scene with tons of fun maps and mods and now it is completely dead, because you can't get drops there.

Even all the new or upcoming games competing for players in the class shooter genre (Overwatch, Dirty Bomb, Battleborn...) seem to complete ignore this aspect.

This is not a problem only in FPS-games, but MMORPGs have been suffering from the same problem. To me, WoW pretty much died at the moment when the LFG tool was implemented in its current form.